0b0000 0001 = 0x01 = 1
0b1010 0101 = 0xa5 = a*16+5 = 165
2^32次方可尋址空間是4GB
1GB=1024MB=1024*1024KB=1024*1024*1024Byte=2^30Byte
0b0000 0001 = 0x01 = 1
0b1010 0101 = 0xa5 = a*16+5 = 165
2^32次方可尋址空間是4GB
1GB=1024MB=1024*1024KB=1024*1024*1024Byte=2^30Byte